runekaagaard/django-multiple-choices

Django model field that can select multiple choices and stores them as a bitmask value in the database.

django-multiple-choices

Alternative to https://github.com/disqus/django-bitfield and https://github.com/goinnn/django-multiselectfield/

• Works on MySQL (postgres not tested)
• Stores the selected value as a bitmask value which allows for fast db access
• Admin support
• Custom mc_in and mc_notin query lookups
• One file

Usage

Import it and stick it on a model:

from django.db import models
from multiple_choices import MultipleChoicesModelField

LIKES = ((0, "Pizza"), (1, "Juice"), (2, "Beef"), (3, "Beer"), (4, "Milk"))

class Person(models.Model):
    likes = MultipleChoicesModelField(choices=LIKES, required=True)

Both the choices and the required props are required.

Two new query lookups mc_in and mc_notin are available:

Person.objects.filter(likes__mc_in={0, 1}) # Persons who like pizza and juice
Person.objects.filter(likes__mc_notin={4}) # Persons who doesn't like milk

Exact searching goes like this:

Person.objects.filter(likes={2}) # Persons who only likes beef

Installation

Copy multiple_choices.py somewhere on your python path.